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7622855 |
Actuator, liquid droplet ejecting head, liquid droplet ejecting device, and method of manufacturing actuator
An actuator has: a piezoelectric body formed in a shape of a tube and having an inner side wall, which faces a hollow portion of the tube, and an outer side wall, which is structured at an outer...
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7614727 |
Liquid ejection head, manufacturing method thereof, and image forming apparatus
The liquid discharge head comprises: a plurality of ejection ports which eject liquid; a plurality of pressure chambers which communicate respectively with the plurality of ejection ports; a...
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7611229 |
Inkjet head
An inkjet head includes a passage unit and an actuator unit. The passage unit includes a common ink chamber and an individual ink passage leading from an outlet of the common ink chamber through a...
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7607764 |
Multi-nozzle ink jet head and manufacturing method thereof
A multi-nozzle ink jet head using piezoelectric elements and a manufacturing method thereof are disclosed. A head ( 1 ) has a nozzle member ( 10 ) in which a plurality of nozzles ( 12 ) are formed,...
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7607763 |
Droplet discharging head and droplet discharging device
A droplet discharging head includes: a plurality of containing chambers provided in parallel to one another with partition walls interposed therebetween, each containing chamber, partitioned and...
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7604331 |
Piezoelectric element, method of manufacturing the piezoelectric element, and liquid ejecting head
A piezoelectric element includes a lower electrode film formed on one surface of a substrate, a piezoelectric layer made of a piezoelectric material and disposed on the lower electrode film, and an...
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7604325 |
Inkjet printhead with reciprocating actuator
An inkjet printhead integrated circuit includes a substrate defining an ink supply channel. An ink chamber structure is arranged on the substrate to define an ink chamber into which ink from the...
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7603756 |
Method of forming piezoelectric actuator of inkjet head
A method of forming a piezoelectric actuator of an inkjet head formed on a vibrating plate to provide a driving power for ejecting ink to each of pressure chambers is provided. The method includes...
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7600861 |
Inkjet head
An actuator can selectively take a first state wherein a volume of a pressure chamber is V 1 and a second state wherein the volume of the pressure chamber is V 2 larger than V 1 . The actuator...
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7600860 |
Liquid ejection head and image forming apparatus
The liquid ejection head comprises: a plurality of nozzles through which liquid is ejected in an ejection direction; a plurality of pressure chambers which are connected respectively to the nozzles...
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7600318 |
Method of manufacturing a piezoelectric vibration element for an inkjet recording head
The present invention relates to a method of manufacturing a piezoelectric vibration element unit used for an inkjet recording head. The method includes the steps of alternately laminating...
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7597417 |
Discharge determination device and method
The discharge determination device which determines discharge status in a droplet discharge apparatus comprising: a nozzle which discharges a droplet of liquid; a pressure chamber which is...
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7594308 |
Method for producing a piezoelectric actuator and a liquid transporting apparatus
A method for manufacturing a piezoelectric actuator includes the steps of measuring a thickness of a vibration plate and determining a thickness of a piezoelectric layer based on an amount of...
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7591540 |
Ink ejection arrangement having cooperating chamber wall edge portions and paddle edge portions
An ink ejection arrangement for a printhead integrated circuit is provided. The arrangement includes a fluid chamber having a fluid outlet nozzle and a fluid supply channel respectively defined in...
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7588307 |
Piezolelectric inkjet printhead having temperature sensor and method of making the same
A piezoelectric inkjet printhead having a channel forming plate including an ink channel having a pressure chamber coupled to a nozzle, a piezoelectric actuator including a lower electrode on the...
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7585062 |
Liquid ejecting head
A liquid ejecting head includes a passage unit, having a nozzle opening, a pressure generating chamber communicating with the nozzle opening, and a reservoir holding a liquid to be supplying to the...
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7585061 |
Ejection head and image forming apparatus
The ejection head includes a wall member which forms a pressure chamber and has an ejection aperture through which droplets of a liquid are ejected onto an ejection receiving medium, the pressure...
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7584903 |
Microdosing device
A microdosing device includes a dosing chamber which at least temporarily receives a quantity of liquid, and to which at least one dispensing opening is assigned. A vibration unit is operatively...
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7581824 |
Electrostatic actuator, droplet discharge head and method for manufacturing the droplet discharge head, droplet discharge apparatus, and device
To provide an electrostatic actuator that generates high pressure under a given voltage and includes an insulating film exhibiting excellent insulation resistance, a droplet discharge head that...
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7581823 |
Piezoelectric film element, method of manufacturing the same, and liquid discharge head
A porous layer composed of porous silicon, and the like is formed by anodization and the like on a substrate acting as a vibration sheet of, for example, a liquid discharging head, and a single...
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7575307 |
Liquid ejection head, method of manufacturing same, and image forming apparatus
The liquid ejection head comprises: a pressure chamber which is connected to an ejection port ejecting liquid; an actuator which is disposed inside the pressure chamber and deforms due to...
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7575306 |
Discharge head, method of manufacturing discharge head, and liquid discharge apparatus
The discharge head comprises: a liquid chamber which accommodates a liquid to be discharged from a discharge hole onto a discharge receiving medium; a piezoelectric body which applies a discharge...
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7575305 |
Liquid ejection head having improved ejection performance
An object is to provide a fine forging method for forming partitions of recesses precisely and forming recess shapes for pressure generation chambers etc. with high accuracy as well as a liquid...
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7571997 |
Inkjet recording device and inkjet recording head having current plates for regulating ink flow
In the head of an inkjet recording device, current plates are arranged along each row and between each row of supply openings. One end and the other end of each current plate do not both contact a...
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7571992 |
Pressure compensation structure for microelectromechanical systems
A fluidic micro-electromechanical device includes a pressure compensating subsystem that enables the device to operate consistently in changing environmental pressure conditions. Such a fluidic...
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7568783 |
Inkjet head
An inkjet head has a passage unit where individual ink passages are formed, and an actuator unit bonded onto the upper surface of the flow passage unit. On the upper surface of the actuator unit,...
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7566118 |
Print head with thin membrane
A microfabricated device and method for forming a microfabricated device are described. A thin membrane including silicon is formed on a silicon body by bonding a silicon-on-insulator substrate to...
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7562968 |
Piezoelectric element, liquid-jet head and liquid-jet apparatus
Disclosed are a piezoelectric element which can obtain a large strain with a low drive voltage, a liquid-jet head and a liquid-jet apparatus. The piezoelectric element includes: a lower electrode;...
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7560854 |
Piezoelectric element and its manufacturing method
A piezoelectric element includes: a base substrate; a lower electrode provided above the base substrate; a lower dummy electrode provided on the base substrate and electrically insulated from the...
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7560852 |
Piezoelectric actuator, method for manufacturing piezoelectric actuator, and liquid transporting apparatus
A piezoelectric actuator includes a supporting member in which pressure chambers are formed, a vibration plate which is joined to a joining section of the supporting member, a piezoelectric layer...
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7556328 |
Liquid-droplet jetting apparatus
A liquid-droplet jetting apparatus such as an ink-jet printer makes a meniscus of an ink in a nozzle vibrate by applying a no-jetting drive pulse which does not jet the ink. An operation of...
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7549733 |
Diaphragm plate with partially-etched port
A printhead assembly that includes a partially-etched port structured to be opened by application of pressure to the port area, one or more leaflets being depressed into an internal chamber...
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7544240 |
Composition for ferroelectric thin film formation, ferroelectric thin film and liquid-jet head
A composition for ferroelectric thin film formation, comprising at least a colloidal solution containing metals serving as materials constituting a ferroelectric thin film, the colloidal solution...
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7540595 |
Liquid ejection head
The liquid ejection head comprises: a pressure chamber which accommodates liquid to be ejected through an ejection aperture; a diaphragm which constitutes a wall of the pressure chamber; a supply...
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7540084 |
Method for manufacturing ink-jet heads
A method for manufacturing a plurality of ink-jet heads comprising: forming an insulating ceramic layer at least on one of outermost metal plates of a plurality of metal plates, the outermost metal...
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7537324 |
Liquid tank and ink jet printing apparatus
There is provided a liquid tank having a liquid remaining amount sensing module that makes it possible to reliably determine that the amount of ink has reached a predetermined value, in spite of...
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7537320 |
Piezoelectric actuator and liquid transporting apparatus
A piezoelectric actuator 3 of a liquid transporting apparatus includes grooves 40 which are formed on a surface of a vibration plate 30 on a side of pressure chambers 14 , and each of the...
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7536785 |
Method for manufacturing a droplet ejection head
A method for manufacturing a droplet ejection head includes a step of forming recessed sections for forming nozzles by etching half way through a first face of a silicon substrate, a step of...
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7536762 |
Method of manufacturing an ink-jet assembly
A method for manufacturing a board assembly comprises the steps of: tin-plating a first terminal and a copper-made second terminal that are formed on a circuit board; mounting an electronic...
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7530675 |
Piezoelectric actuator device
The present application is directed to piezoelectric actuator devices. One embodiment of a piezoelectric actuator comprises a chamber diaphragm having a major surface. A piezoelectric transducer is...
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7527364 |
Printer, liquid discharging head, and flexible flat cable of liquid discharging head
An ink-jet head includes a head main body including a channel unit in which a pressure chamber is formed, and a piezoelectric actuator having a piezoelectric deformation portion facing the pressure...
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7527363 |
Discharge head of image forming apparatus with piezoelectric body for generating and sensing pressure
The discharge head comprises: a nozzle plate having a discharge aperture through which a droplet of liquid is discharged onto a discharge receiving medium; a pressure chamber which stores the...
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7527362 |
Ink-jet having an arrangement to suppress variations in ink ejection
A head main body includes a passage unit in which pressure chambers are arranged adjacent to each other along its surface, and an actuator unit that is fixed to the passage unit to change the...
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7520585 |
Liquid ejection head and liquid ejection apparatus having multiple pressure sensor member layers
The liquid ejection head has nozzles for ejecting liquid in which a plurality of pressure chambers are arranged in a two-dimensional matrix configuration. The liquid ejection head comprises:...
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7520579 |
Image forming apparatus having droplet speed control
An image forming apparatus includes a recording head, and a drive pulse generator. The recording head includes a nozzle to discharge a droplet of recording liquid, a pressure-generating room to...
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7517064 |
Liquid transporting apparatus
A piezoelectric actuator of an ink-jet head as a liquid transporting apparatus includes a vibration plate which also serves as a common electrode, a piezoelectric layer arranged on the vibration...
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7503642 |
Inkjet head and method for manufacturing the same
An inkjet head includes a channel unit and actuator units. Inside the channel unit, individual ink channels are formed so that ink supplied from ink inlets is ejected from nozzles via pressure...
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7500734 |
Inkjet recording head and inkjet recording device
In a recording head which discharges ink, which is supplied from an ink flow path to pressure chambers, from nozzles by operation of actuators, one actuator is provided for each pressure chamber....
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7497558 |
Piezoelectric actuator and liquid-droplet jetting head
A piezoelectric actuator includes individual inner-electrodes arranged between stacked ceramic sheets, individual surface-electrodes arranged in a row in a row-direction on a top surface of the...
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7497557 |
Liquid ejecting apparatus, method for manufacturing liquid ejecting apparatus, and ink-jet printer
An ink-jet head includes a common liquid chamber, a plurality of pressure chambers, a plurality of nozzles which eject ink, a plurality of individual ink channels communicating with the common...
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